2006 INFINITI M35 Factory Service Manual

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Page 2761 of 5621

INFINITI M35 2006 Factory Service Manual EC-1218
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DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 January2006 M35/M45
DTC P0643 SENSOR POWER SUPPLYPFP:18919
On Board Diagnosis LogicNBS005JY
This self-diagnosis has the one trip detection

Page 2762 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0643 SENSOR POWER SUPPLY
EC-1219
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005K0
TBWT1045E

Page 2763 of 5621

INFINITI M35 2006 Factory Service Manual EC-1220
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DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM gro

Page 2764 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0643 SENSOR POWER SUPPLY
EC-1221
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Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNBS005K1
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loo

Page 2765 of 5621

INFINITI M35 2006 Factory Service Manual EC-1222
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DTC P0643 SENSOR POWER SUPPLY
Revision: 2006 January2006 M35/M45
3. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following term

Page 2766 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0850 PNP SWITCH
EC-1223
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Revision: 2006 January2006 M35/M45
DTC P0850 PNP SWITCHPFP:23006
Component DescriptionNBS005K2
When the selector lever position is P or

DTC P0850 PNP SWITCH
EC-1223
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Revision: 2006 January2006 M35/M45
DTC P0850 PNP SWITCHPFP:23006
Component DescriptionNBS005K2
When the selector lever position is P or N, park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-II Reference Value in Data Monitor ModeNBS005K3
Specification data are reference values.
On Board Diagnosis LogicNBS005K4
DTC Confirmation ProcedureNBS005K5
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to EC-1226, "
Diagnostic Procedure" .
If OK, go to following step.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Start engine and warm it up to normal operating temperature.
5. Maintain the following conditions for at least 50 consecutive sec-
onds.
6. If 1st trip DTC is detected, go to EC-1226, "
Diagnostic Procedure" .
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW
Ignition switch: ONSelector lever: P or N ON
Selector lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850
0850Park/neutral position
switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of engine
starting and driving.
Harness or connectors
[The park/neutral position (PNP) switch
circuit is open or shorted.]
Park/neutral position (PNP) switch
Unified meter and A/C amp.
TCM
Position (Selector lever) Known-good signal
N or P position ON
Except above position OFF
SEF212Y
ENG SPEED 1,300 - 6,375 rpm
COOLAN TEMP/S More than 70
C (158F)
B/FUEL SCHDL 3.0 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 MPH)
Selector lever Suitable position
SEF213Y

Page 2767 of 5621

INFINITI M35 2006 Factory Service Manual EC-1224
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DTC P0850 PNP SWITCH
Revision: 2006 January2006 M35/M45
Overall Function CheckNBS005K6
Use this procedure to check the overall function of the park/neutral position (PNP)

Page 2768 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0850 PNP SWITCH
EC-1225
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Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005K7
TBWT1052E

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